J/A+AS/128/457 Proper motion LTT stars -5<DE←30, 0<RA<13h30 (Wroblewski+ 1998)
New proper motion determination of Luyten catalogue stars (LTT) with declination
between -5° and -30° and right ascension between 0h and 13h 30m.
Wroblewski H., Torres C.
<Astron. Astrophys. Suppl. Ser. 128, 457 (1998)>
=1998A&AS..128..457W 1998A&AS..128..457W (SIMBAD/NED BibCode)
ADC_Keywords: Proper motions
Keywords: astrometry - stars: kinematics
Abstract:
Data are given for 353 LTT stars found on 42 areas, covering 25 square
degrees each, with declination between -5° and -30° and right
ascension between 0h and 13h 30m. Nineteen stars present differences
in proper motion ≥0.10", twenty present differences in position angle
≥20° and six present those differences in both values.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 92 353 Proper motions and position angles
--------------------------------------------------------------------------------
See also:
I/98 : NLTT Catalogue (Luyten, 1979)
I/87 : LHS Catalogue, 2nd Edition (Luyten 1979)
J/A+AS/83/317 : Proper-motion LTT stars Dec←40, 0<RA<4h30 (Wroblewski+ 1990)
J/A+AS/92/449 : Proper-motion LTT stars Dec←40, 4h30<RA<16 (Wroblewski+ 1992)
J/A+AS/110/27 : Proper motion LTT stars Dec←40, 16<RA<24 (Wroblewski+, 1995)
J/A+AS/128/457 : LTT stars -5<DE←30, 0<RA<13h30 (Wroblewski+ 2000)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID Correlative number
5- 8 I4 --- LTT Star number in Luyten's catalogue
10- 15 A6 --- Loc Location number (1)
17- 20 F4.1 mag mag Magnitude
22- 23 I2 h RA1950h Right ascension (1950)
25- 26 I2 min RA1950m Right ascension (1950)
28- 31 F4.1 s RA1950s Right ascension (1950)
33 A1 --- DE1950- Declination sign
34- 35 I2 deg DE1950d Declination (1950)
37- 38 I2 arcmin DE1950m Declination (1950)
40- 41 I2 arcsec DE1950s Declination (1950)
43- 44 I2 h RAh Right ascension (J2000)
46- 47 I2 min RAm Right ascension (J2000)
49- 52 F4.1 s RAs Right ascension (J2000)
54 A1 --- DE- Declination sign
55- 56 I2 deg DEd Declination (J2000)
58- 59 I2 arcmin DEm Declination (J2000)
61- 62 I2 arcsec DEs Declination (J2000)
64- 68 F5.3 arcsec/yr pm Annual proper motion
70- 74 F5.3 arcsec/yr e_pm rms uncertainty on pm
76- 80 F5.1 deg pmPA Position angle of proper motion
82- 86 F5.2 arcsec/yr Dpm Comparison of our proper motions with LTT
proper motions in sense LTT minus ours
88- 90 I3 deg DpmPA Comparison of our position angles with LTT
position angles in sense LTT minus ours
92 A1 --- Com [*] Comment (2)
--------------------------------------------------------------------------------
Note (1): The first two digits refer to the area number and the
other digits refer to the star number in the area
Note (2): The annual proper motions and the position angles are
the means of the two values obtained from the plate pairs; 20 LTT
stars were common to the overlapped areas mentioned above. For them,
the results, indicated by *, correspond to the means of the values
obtained from four plates pairs.
--------------------------------------------------------------------------------
Acknowledgements: Herbert Wroblewski
(End) Patricia Bauer [CDS] 22-Apr-1998